Mesostic

A mesostic is a poem or other typography such that a vertical phrase intersects lines of horizontal text. It is similar to an acrostic, but with the vertical phrase intersecting the middle of the line, as opposed to beginning each new line.

The practice of using index words to select pieces from a preexisting text was developed by Jackson Mac Low as "diastics". It was used extensively by the experimental composer John Cage (Walsh 2001).

There are two types of mesostic: fifty percent and one hundred percent. (See also below the example.)

In a fifty-percent mesostic, according to Andrew Culver (John Cage's assistant), "Between any two [capitalized] letters, you can't have the second [letter]." [1]

In a one-hundred-percent mesostic, "Between any two [capitalized] letters, you can't have either [letter]." [2]

Below, an example of a one-hundred-percent mesostic:

KITCHEN
let us maKe
of thIs
modesT
plaCe
a room Holding
tons of lovE
(&, Naturally, much good food, too)

It qualifies as a one-hundred-percent mesostic because there is no k or i in the text between the capital K of line 1 and the capital I of line 2 –